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Sunday, 25 June 2017

Rainbow

A rainbow is a full circle of light, however, due to most people viewing it on the ground we only see the rainbow's semi-circle or arc.


You can only see a rainbow with your back to the Sun.

The colors of a rainbow can only be seen when the angle of reflection between the sun, the drops of water, and the observer's line of vision is between 40 and 42 degrees

The record for longest lasting rainbow is a full three hours for a bow that persisted over North Wales on August 14, 1979.


When two rainbows form at the same time, the second, bigger rainbow will have its colors in reverse.

A fire rainbow is one of the rarest of all naturally-occurring atmospheric phenomena. It looks like a cloud made of rainbows.

Rainbows span a continuous spectrum of colors. For colors seen by the human eye, the most commonly cited and remembered sequence is Isaac Newton's sevenfold red, orange, yellow, green, blue, indigo and violet, remembered by the mnemonic, Richard Of York Gave Battle In Vain.

Newton originally divided the spectrum into five main colors: red, yellow, green, blue and violet. He later included orange and indigo, so there would be seven colors to match the seven notes on the Western musical scale.

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